A novel blind adaptive multiuser detection based on CMA for DS/CDMA over multipath fading channels

Author

Jiang, Xiaobing ; Xue, Qiang ; Lv, Feiyan ; Liu, Yawei ; Feng, Yumin

Author_Institution

Dept. of Commun. & Inf., Bejing Jiaotong Univ., Beijing, China

Volume

3

fYear

2004

fDate

31 Aug.-4 Sept. 2004

Firstpage

1922

Abstract

The problem for blind adaptive multi-user to detect the direct-sequence code-division multiple-access (DS/CDMA) signals in multipath fading channels is investigated in this paper. A novel detection algorithm based on constant modulus algorithm (CMA) is proposed. Analysis shows that this algorithm satisfies the decorrelating conditions. This algorithm reduces the complexity remarkably as compared with the traditional SVD subspace algorithm. Simulation results demonstrate that this algorithm offers higher detecting performance and better resistance for both the channel fading and the multiple-access interference.

Keywords

adaptive signal detection; code division multiple access; computational complexity; fading channels; multipath channels; multiuser detection; radiofrequency interference; spread spectrum communication; CMA; DS-CDMA; blind adaptive multiuser detection; constant modulus algorithm; direct-sequence code-division multiple-access; multipath fading channel; multiple-access interference; subspace algorithm; Algorithm design and analysis; Cost function; Decorrelation; Detection algorithms; Fading; Interference; Multiaccess communication; Multipath channels; Multiuser detection; Telecommunications;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing, 2004. Proceedings. ICSP '04. 2004 7th International Conference on

Print_ISBN

0-7803-8406-7

Type

conf

DOI

10.1109/ICOSP.2004.1442146

Filename

1442146